问题
I created a Client ID for my Android App in the API Console specifying the package name (com.clc.mmm.free) and the Certificate fingerprint (SHA1). Then I deleted the Client ID and the API Console project where the ID was created (it was a "test" API Console project).
Now I want to re-create the Client ID in a new API Console project but I am getting the message: This client ID is globally unique and is already in use.
However I cannot find a client ID for my package/key anywhere, I even un-deleted the initial project and checked, there is no Client ID for my package, but still getting the same error!
Without the Client ID I cannot publish my new release of the app with Google+ sign-in. Please help!
回答1:
http://code.google.com/p/google-plus-platform/issues/detail?id=554
I had the same issue. I solved it reading the last post on this thread.
回答2:
I had the same issue. There was google project which i previously linked with my current the android package. I removed the OAuth 2.0 client IDs from the previous google project.
One can remove client ids from the credential tab under API manager.
After removing client ids all worked like a charm.
回答3:
I had same issue. It was not any issue on google side.
First I have added fingerprint and package without any issues. I deleted it. Tried to add fingerprint with different package name. Then I got the error. I realized that the problem was not related incomplete deletion of my old entry.
The issue was that same pair of package and fingerprint was added by android dev in different project long before.
You can add same fingerprint with different package without any problems. That could be a hint when to troubleshoot what's going on.
回答4:
I had same issue. It was NOT issue on google side.
After getting this error I spent 4 hours checking all my accounts, all projects in them and than checking it again. I have even asked all developers in my team if they had created any keys for our package name. Finally I have found a project hidden on "All projects" tab containing the client id I was searching for.
来源：https://stackoverflow.com/questions/16659689/error-when-recreating-a-client-id-for-an-android-app-in-the-api-console